×

Optic system for light guide with controlled output

  • US 8,641,257 B2
  • Filed: 12/31/2009
  • Issued: 02/04/2014
  • Est. Priority Date: 01/02/2009
  • Status: Active Grant
First Claim
Patent Images

1. A light guide system, comprising:

  • a light guide comprising a first surface, a second surface, and a third surface, wherein light entering through the first surface propagates along the light guide by total internal reflection between the second surface and the third surface; and

    elements that are arranged with respect to the light guide to disrupt the total internal reflection of the propagating light, each element in physical contact with a respective portion of the second surface, each contact element configured such that a portion of the light that is incident thereon is transmitted therethrough; and

    a respective reflector positioned to receive the light transmitted through each element, the reflector having a curvature such that the light is reflected back into the light guide and exits the light guide through the third surface;

    wherein the elements each comprise a contact portion that physically contacts the second surface and the contact portion is small compared to the reflectors such that the elements function as quasi-point sources.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×